base_convert Convert a number between arbitrary bases &reftitle.description; stringbase_convert stringnum intfrom_base intto_base Returns a string containing num represented in base to_base. The base in which num is given is specified in from_base. Both from_base and to_base have to be between 2 and 36, inclusive. Digits in numbers with a base higher than 10 will be represented with the letters a-z, with a meaning 10, b meaning 11 and z meaning 35. The case of the letters doesn't matter, i.e. num is interpreted case-insensitively. base_convert may lose precision on large numbers due to properties related to the internal float type used. Please see the Floating point numbers section in the manual for more specific information and limitations. &reftitle.parameters; num The number to convert. Any invalid characters in num are silently ignored. As of PHP 7.4.0 supplying any invalid characters is deprecated. from_base The base num is in to_base The base to convert num to &reftitle.returnvalues; num converted to base to_base &reftitle.changelog; &Version; &Description; 7.4.0 Passing invalid characters will now generate a deprecation notice. The result will still be computed as if the invalid characters did not exist. &reftitle.examples; ]]> &example.outputs; &reftitle.seealso; intval